The first 90 days of dating someone new is the cheapest window to notice a real mismatch, before you're emotionally invested enough for it to be expensive to walk away. Most people spend this window hoping things work out rather than actually evaluating whether they should.
Red flags worth taking seriously early
Inconsistency between what someone says and what they do — especially around plans, availability, and follow-through — is more predictive than any single conversation. So is how someone treats people who can't do anything for them: a server, a rideshare driver, a stranger who inconveniences them. Early defensiveness about basic, reasonable questions is also worth noting, since it tends to compound rather than improve later.
What's normal early-relationship awkwardness
Nerves, occasional miscommunication, and not yet knowing someone's full context for a reaction are normal and don't need to be treated as red flags. The distinction is whether a pattern repeats after you've addressed it directly, or whether it was a one-off.
Doing an actual values audit
Beyond red flags, the first 90 days is also the window to notice whether your actual values line up — not the values someone states, but the ones their daily choices reveal. The First 90 Days gives you a structured audit for exactly this, plus specific questions worth asking early rather than months in.
Frequently asked questions
Is it too early to ask serious questions in the first few weeks?
Not if they're asked naturally rather than as an interrogation. Someone unwilling to engage with any values-related question this early is itself useful information.
What if I notice a red flag but really like the person?
Liking someone doesn't cancel out a real red flag; it just makes it harder to see clearly. Naming the specific behavior, separate from your feelings about the person, usually helps.
How many red flags is "too many"?
There's no fixed number. One serious flag (dishonesty, disrespect toward others) can outweigh several minor quirks, so severity matters more than a simple tally.